1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef UI_VIEWS_WIDGET_DESKTOP_AURA_X11_WINDOW_EVENT_FILTER_H_
6 #define UI_VIEWS_WIDGET_DESKTOP_AURA_X11_WINDOW_EVENT_FILTER_H_
10 #include "base/compiler_specific.h"
11 #include "base/message_loop/message_loop.h"
12 #include "ui/events/event_handler.h"
13 #include "ui/gfx/x/x11_atom_cache.h"
14 #include "ui/gfx/x/x11_types.h"
15 #include "ui/views/views_export.h"
26 class DesktopWindowTreeHost;
27 class NativeWidgetAura;
29 // An EventFilter that sets properties on X11 windows.
30 class VIEWS_EXPORT X11WindowEventFilter : public ui::EventHandler {
32 explicit X11WindowEventFilter(DesktopWindowTreeHost* window_tree_host);
33 ~X11WindowEventFilter() override;
35 // Overridden from ui::EventHandler:
36 void OnMouseEvent(ui::MouseEvent* event) override;
39 // Called when the user clicked the caption area.
40 void OnClickedCaption(ui::MouseEvent* event,
41 int previous_click_component);
43 // Called when the user clicked the maximize button.
44 void OnClickedMaximizeButton(ui::MouseEvent* event);
46 void ToggleMaximizedState();
48 // Dispatches a _NET_WM_MOVERESIZE message to the window manager to tell it
49 // to act as if a border or titlebar drag occurred.
50 bool DispatchHostWindowDragMovement(int hittest,
51 const gfx::Point& screen_location);
53 // The display and the native X window hosting the root window.
57 // The native root window.
58 ::Window x_root_window_;
60 ui::X11AtomCache atom_cache_;
62 DesktopWindowTreeHost* window_tree_host_;
64 // True if |xwindow_| is the current _NET_ACTIVE_WINDOW.
67 // The non-client component for the target of a MouseEvent. Mouse events can
68 // be destructive to the window tree, which can cause the component of a
69 // ui::EF_IS_DOUBLE_CLICK event to no longer be the same as that of the
70 // initial click. Acting on a double click should only occur for matching
74 DISALLOW_COPY_AND_ASSIGN(X11WindowEventFilter);
79 #endif // UI_VIEWS_WIDGET_DESKTOP_AURA_X11_WINDOW_EVENT_FILTER_H_